Question

Va roog 7(d,d,f) va roooooogg dau coroana.!!!​

Answer 1

Răspuns:

d) $(2\frac{1}{2}) ^{n} =\frac{125}{8}$ ; $(\frac{5}{2}) ^{n} =(\frac{5}{2}) ^{3}$ ⇒ n = 3

e) $(\frac{1}{3^{2}}) ^{n}=\frac{1}{729}$ ; $(\frac{1}{9}) ^{n}=\frac{1}{9^{3} }$ ⇒ n = 3

f) $(\frac{1}{8})^{n} = \frac{1}{4^{3}}$ ; $(\frac{1}{2^{3}})^{n} = \frac{1}{(2^{2})^{3}}$ ; $\frac{1}{2^{3n}} = \frac{1}{2^{6}}$ ⇒ n = 2

Explicație pas cu pas: